The method relies on the deduction of some suitable Pohoˇzaev iden-tity which provides necessary conditions to get existence of nontrivial solutions;In chapter 3, we obtain some non-existence results for a non-cooperative ellipticsystem with lack of compactness; In chapter 4, we obtain infinitely many radi-ally symmetric solutions of a semilinear coope.
第二章研究了一类耦合Klein-Gordon-Born-Infeld方程,运用了Pohoˇzaev恒等式的一些变形等式得到方程组解的不存在性;第三章研究了一类缺乏紧性非合作椭圆系统解的不存在性;第四章运用Z_2-山路引理得到了一类半线性合作椭圆系统在无界区域上的径向对称解。
(psychoanalysis) a lack of cathexis; a condition in which significant objects or memories arouse no emotion in an inpidual.
性欲缺乏或丧失；一种有效刺激或记忆不能引起个体情感的状况。
Suppressing or causing loss of appetite.
使食欲减退的抑止或引起食欲缺乏的
Decline or absence of sexual desire.
性欲减弱，性欲缺失
Suffering from or afflicted with anorexia nervosa.
患神经性厌食症的受神经性食欲缺乏症影响或折磨的
Lack of temperance, as in the indulgence of an appetite or a passion.
缺乏节制，如放纵食欲或情绪
They are empty of humanity, credibility, and motivation.
他们缺乏人性，缺乏真实性，缺乏一种行为的动机。
Lack of normal muscle tone.
张力缺乏，弛缓缺乏正常的肌肉弹性
They are empty of credibility, and motivation.
他们缺乏真实性, 缺乏一种行为的动机。
They are emepty of credibility, and motivation.
他们缺乏真实性,缺乏一种行为的动机.
They are empty of credibility,and motivation.
他们缺乏真实性，缺乏一种行为的动机。
Stress, lack of exercise, poor eating habits, hidden health problems -- all can make his sex drive nosepe.
压力、缺乏锻炼、不合理的饮食习惯、隐藏的健康问题——都会造成他的性爱欲望急剧滑坡。
isolated gonadotropin deficiency
单一性促性腺素缺乏症
acquired immunity deficiency syndrome
获得性免疫缺乏综合征
atrophy of tongue due to avitaminosis
维生素缺乏性舌萎缩
isolated luteinizing hormone deficiency
单一性促黄体素缺乏症
isolated follicular stimulating hormone deficiency
单一性促卵泡素缺乏症
acute agranulocytosis
急性粒状白血球缺乏症
infectious feline agranulocytosis
猫传染性粒细胞缺乏症